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21.发明公开
公开(公告)号：KR1020140108749A
公开(公告)日：2014-09-15
申请号：KR1020130021262
申请日：2013-02-27
Applicant: 한국전자통신연구원
CPC classification number: G06F21/64
Abstract: Provided are a device for privacy protection document authentication information using various privacy protection electronic signatures and multidimensional codes and a method for authenticating a privacy protection document using the same. The provided device comprises: an electronic signature information generation unit to generate privacy protection electronic signature information about document content; a multidimensional code generation unit to generate a multidimensional code corresponding to the generated privacy protection electronic signature information; and a multidimensional code output unit to output the generated multidimensional code to a document. According to the device of the present invention, a privacy protection electronic signature value generated by a personalized smart device can be output to a physical document in the form of a multidimensional code to authenticate the document.
Abstract translation: 提供了一种使用各种隐私保护电子签名和多维码的隐私保护文档认证信息的设备以及使用其进行认证的隐私保护文档的方法。 所提供的设备包括：电子签名信息生成单元，用于生成关于文档内容的隐私保护电子签名信息; 多维代码生成单元，用于生成与生成的隐私保护电子签名信息对应的多维代码; 以及多维代码输出单元，用于将生成的多维代码输出到文档。 根据本发明的装置，由个性化智能设备生成的隐私保护电子签名值可以以多维代码的形式被输出到物理文档以对该文档进行认证。
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公开(公告)号：KR1020140077701A
公开(公告)日：2014-06-24
申请号：KR1020120146779
申请日：2012-12-14
Applicant: 한국전자통신연구원 , 고려대학교 산학협력단
Abstract: The present invention relates to a high-speed cube computation module. The high-speed cube computation module according to an embodiment of the present invention conducts cube computation which is the basis of the pairing encryption computation to accelerate the speed of the pairing encryption algorithm computation in a limited implementation environment such as a ubiquitous computing environment. When the cube computation module is implemented in a hardware or software environment, the cube computation module can shorten the time required for the cube computation as low as 1/7.
Abstract translation: 本发明涉及一种高速立方体计算模块。 根据本发明的实施例的高速立方体计算模块进行立方体计算，其是配对加密计算的基础，以在诸如无处不在的计算环境的有限实施环境中加速配对加密算法计算的速度。 当立方体计算模块在硬件或软件环境中实现时，立方体计算模块可以将多维数据集计算所需的时间缩短到1/7。
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公开(公告)号：KR1020140060022A
公开(公告)日：2014-05-19
申请号：KR1020120126601
申请日：2012-11-09
Applicant: 한국전자통신연구원
IPC: H04L9/08
Abstract: A quantum signature method by an arbitrator and a system using the same are disclosed. The quantum signature method by the arbitrator according to the present invention comprises the steps of: sharing a bell state and a private key previously generated among a signer device, an arbitrator device and a receiver device; encrypting a message to be transmitted by the signer device, generating an encrypted quantum message and a signature corresponding to the encrypted quantum message and transmitting a message-signature pair to the arbitrator device based on them; making the arbitrator device verify validity of the signature on the encrypted quantum message provided by the signer device and transmit a verification result and the message-signature pair to the receiver device; and making the receiver device check the message-signature pair and the verification result and decrypt the encrypted quantum message by using the previously shared private key according to the check result.
Abstract translation: 公开了一种由仲裁员和使用其的系统的量子签名方法。 根据本发明的仲裁员的量子签名方法包括以下步骤：共享先前在签署者设备，仲裁设备和接收机设备之间生成的铃声状态和私钥; 加密由签名者设备发送的消息，生成加密的量子消息和对应于加密的量子消息的签名，并基于它们向仲裁设备发送消息签名对; 使仲裁设备验证由签名者设备提供的加密量子消息上的签名的有效性，并将验证结果和消息签名对传送到接收机设备; 并且使接收机设备检查消息签名对和验证结果，并且根据检查结果使用先前共享的私钥对加密的量子消息进行解密。
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公开(公告)号：KR1020130085491A
公开(公告)日：2013-07-30
申请号：KR1020110132068
申请日：2011-12-09
Applicant: 한국전자통신연구원
CPC classification number: H04L9/0861 , H04L9/3073
Abstract: PURPOSE: A search available password system at multilateral environment capable of the index verification and tracking and a method thereof are provided to verify the index which is produced by each user, in the data based in which a plurality of user uses at the same time, and are provided to track the user who produced the index. CONSTITUTION: A key distribution center (200) distributes a personal secret key to a user (S102). The key distribution center tracks the information about a user who produced the index (S112). A user terminal device (204) produces the index for searching the database by using the personal secret key (S104). A database (DB) server (202) verifies the index which is produced in the user terminal. The DB server searches and provides the data which corresponds to the verified index (S110). [Reference numerals] (200) Key distribution center; (202) Database (DB) server; (204) User terminal device; (AA) System parameter generation; (BB) Public key distribution; (S104) Index generation; (S106) Index verification; (S108) Trap door generation; (S110) Searching; (S112) Tracing
Abstract translation: 目的：提供能够进行索引验证和跟踪的多边环境下的搜索可用密码系统及其方法，用于在多个用户同时使用的数据中验证由每个用户产生的索引， 并且被提供以跟踪产生索引的用户。 构成：密钥分配中心（200）向用户分配个人秘密密钥（S102）。 密钥分配中心跟踪有关生成索引的用户的信息（S112）。 用户终端设备（204）通过使用个人秘密密钥产生用于搜索数据库的索引（S104）。 数据库（DB）服务器（202）验证在用户终端中产生的索引。 DB服务器搜索并提供与验证索引对应的数据（S110）。 （附图标记）（200）钥匙配送中心; （202）数据库（DB）服务器; （204）用户终端设备; （AA）系统参数生成; （BB）公钥分发; （S104）索引生成; （S106）索引验证; （S108）陷阱门生成; （S110）搜索; （S112）追踪
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公开(公告)号：KR1020130039174A
公开(公告)日：2013-04-19
申请号：KR1020110103670
申请日：2011-10-11
Applicant: 한국전자통신연구원
CPC classification number: H04L9/3255 , H04L2209/805
Abstract: PURPOSE: A lightweight group signature system with short signatures and a method thereof are provided to improve operation efficiency in signature generation, signature verification, and revocation on smart terminals, while providing security characteristics at a similar level with group signature mechanisms which provide controllable linkability. CONSTITUTION: A key issuing unit(110) initially generates a group public key as a trusted subject and generates a master issuing key(mik), a master opening key(mok), and a master linking key(mlk) corresponding thereto. The key issuing unit performs an interactive protocol, when receiving a join request from a new user device(140), and issues a signature key to the user device. A key revocation identifying unit(120) identifies whether revocation is performed using the updated revocation list and the master opening key when the revocation identification request is received from the signature verifying unit(150) and then, returns the identified results to the signature verifying unit. The key revocation identifying unit uses the master opening key to output the verification information for identifying a signer when a valid signature is given. A signer identification proof evaluating unit(160) evaluates the validity of the signer identification proof generated from a signature control unit(100). [Reference numerals] (100) Control unit; (110) Key issuing unit; (120) Key revocation identifying unit; (130) Signature connecting unit; (140) User device; (150) Signature verifying unit; (160) Signer identification proof evaluating unit; (AA) Generating a group public key; (BB) Master issuing key; (CC) Master identifying key; (DD) Master connecting key; (EE) Confirming signature connection information; (FF) Requesting confirmation of signature connection; (GG) Confirming key revocation; (HH) Requesting confirmation of key revocation; (II) Requesting identification of a signer; (JJ) Issuing a signature key; (KK) Generating a signature; (LL) Generating signer identification proof; (MM) Confirming signer identification proof;
Abstract translation: 目的：提供一种具有短签名的轻量级签名系统及其方法，以提高智能终端签名生成，签名验证和撤销操作的效率，同时提供与提供可控链路性的组签名机制相似的安全特性。 构成：密钥发布单元（110）最初生成作为可信对象的组公开密钥，并生成与其相对应的主发行密钥（mik），主开放密钥（mok）和主链接密钥（mlk）。 当从新用户设备（140）接收到加入请求时，密钥发布单元执行交互协议，并向用户设备发布签名密钥。 密钥吊销识别单元（120）在从签名验证单元（150）接收到撤销标识请求时，识别是否使用更新的撤销列表和主开放密钥执行撤销，然后将所识别的结果返回到签名验证单元 。 密钥吊销识别单元使用主开放密钥输出用于在给出有效签名时识别签名者的验证信息。 签名者识别确认评估单元（160）评估从签名控制单元（100）生成的签名者识别证明的有效性。 （附图标记）（100）控制单元; （110）发行单位; （120）钥匙撤销识别单元; （130）签名连接单元; （140）用户设备; （150）签名验证单元; （160）签名者识别证明评估单元; （AA）生成组公钥; （BB）主发卡钥匙; （CC）主识别键; （DD）主连接键; （EE）确认签名连接信息; （FF）请求确认签名连接; （GG）确认钥匙吊销; （HH）要求确认关键吊销; （二）要求签字人的身份证明; （JJ）签发签名密钥; （KK）生成签名; （LL）生成签名人身份证明; （MM）确认签署者身份证明;
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Patent Agency Ranking
公开(公告)号：KR101190061B1
公开(公告)日：2012-10-11
申请号：KR1020080120412
申请日：2008-12-01
Applicant: 한국전자통신연구원
CPC classification number: G06F17/30979 , H04L9/0894 , H04L9/14
Abstract: The present invention relates to a method for data encryption and a method for data search using a conjunctive keyword and more particularly to, a method for searching data stored in a server by using a conjunctive keyword after storing an index table for the conjunctive keyword and encrypted data in the server. According to an embodiment of the present invention, since keywords and relevant data do not need to be searched one by one by performing a conjunctive keyword search by using a linked tree structure modifying a linked list, it is possible to perform a rapid and efficient conjunctive keyword search.
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公开(公告)号：KR1020090065986A
公开(公告)日：2009-06-23
申请号：KR1020070133562
申请日：2007-12-18
Applicant: 한국전자통신연구원
IPC: H04L9/08
CPC classification number: H04L9/3073 , H04L9/083
Abstract: A method for safely sharing a multi-party-key using a bilinear map and a system thereof are provided to efficiently share a key by using only a first round in order to share the key. A system for sharing a multi-party-key includes a key generating unit(100) and a plurality of participants(201~210). Each participant receives advance information from the key generating unit. Each participant generates a sharing key by exchanging interexchange information. Each participant performs communication with the key generating unit as an advance operation before transmitting the interexchange information. A process for sharing the key is finished by a first round of a step which transmits/receives the exchange information between the participants. The process for sharing the key omits a communication process with the key generating unit.
Abstract translation: 提供一种使用双线性映射安全地共享多方密钥的方法及其系统，以通过仅使用第一轮来共享密钥来有效地共享密钥。 用于共享多方密钥的系统包括密钥生成单元（100）和多个参与者（201〜210）。 每个参与者从密钥生成单元接收提前信息。 每个参与者通过交换交换信息来产生共享密钥。 每个参与者在传送交换信息之前，作为提前操作与密钥产生单元进行通信。 用于共享密钥的过程通过在参与者之间发送/接收交换信息的第一轮完成。 共享密钥的过程省略了与密钥生成单元的通信过程。
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公开(公告)号：KR1020160131798A
公开(公告)日：2016-11-16
申请号：KR1020150064880
申请日：2015-05-08
Applicant: 한국전자통신연구원
Abstract: 연산에러검출이가능한준동형암호방법및 그시스템이제공된다. 준동형암호기법을토대로암호화되고연산이수행된암호문에대하여평문을획득하고, 획득된평문으로부터최종비밀키에포함된부가비밀정보에대응하는하위설정비트들을평문정보로추출한다. 그리고획득한평문에서하위설정비트들을제외한나머지비트들에대하여연산에러검사를수행한다.
Abstract translation: 提供了一种具有操作错误检测功能的加法同态加密方案的方法和系统。 通过解密基于同态加密技术加密并经受操作的密文获得明文，并且从所获取的明文中提取包含在最终私钥中的附加秘密信息的较低设置位作为明文信息。 对所获取的明文中的低位设置位以外的剩余位执行操作错误检查。
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公开(公告)号：KR1020160121016A
公开(公告)日：2016-10-19
申请号：KR1020150050365
申请日：2015-04-09
Applicant: 한국전자통신연구원
IPC: G06Q20/36
Abstract: 인증화폐를이용한전자결제시스템및 그방법이개시된다. 본발명의일 실시예에따른전자결제시스템은사용자의프라이버시정보에대한인증기능과함께결제기능을동시에가진인증화폐를발행하여관리하는인증장치와, 인증장치에요청하여인증화폐를발행받고발행받은인증화폐를이용하여서비스를제공받는사용자단말과, 사용자단말로부터인증화폐를전달받아사용자의세부정보유출없이사용자의프라이버시정보에대한인증을수행하고인증에성공하면사용자단말에서비스를제공하는서비스제공장치를포함한다.
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